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Article Contents
- ABSTRACT
- 1.INTRODUCTION
- 2.MEASURING NEBULAR ABUNDANCES
- 3.CHEMICAL ABUNDANCES OF H II
REGIONS IN OUTER DISKS
- 3.1.Early Work
- 3.2.M83: a Case Study
- 3.3.Other Systems
- 3.4.Results from Galaxy Surveys
- 3.5.Nitrogen Abundances
- 4.ADDITIONAL CONSIDERATIONS
- 4.1.Relation Between Metallicity
and Surface Brightness Breaks
- 4.2.An Analogy with Low Surface
Brightness Galaxies?
- 5.THE EVOLUTIONARY STATUS OF OUTER
DISKS
- 5.1.Flattening the Gradients
- 5.2.Bringing Metals to the
Outer Disks
- 5.2.1.Mixing
- 5.2.2.Enriched Infall
- 6.CONCLUSION
- REFERENCES